SURDACKI, Michał; NIJAKOWSKI, Kacper; MATTHEWS-BRZOZOWSKA, Teresa. Changes in emergency department visit volume before, during and after the COVID-19 pandemic, with an exploratory assessment of air pollution: a preliminary ecological study from Poznań, Poland. Polish Journal of Public Health, Lublin, Poland, v. 136, p. 55–59, 2026. DOI: 10.12923/2083-4829/2026-0010. Disponível em: https://czasopisma.umlub.pl/pjph/article/view/3246. Acesso em: 23 jun. 2026.